Dynamo-electric machine.



C. W. STARKER.

DYNAMO ELECTRIC MACHINE. APPLICATION FILED APR. I. ms.

1 209 775. Patentd 1m 26,1916. t s surfs-4:12:12. 3.5

WITNESSES INVENTOR Mag?! W Sfarker WW ATTORNEY C. W. STARKERf DYNAMOELECTRIC MACHINE.

APPLICATION mm APR. I. nls.

Patented D00. 26, 1916.

a snins-sncn 3.

INVENTOR WITNESSES $014M ATTORNEY W W. MARKER, f? ?ITTSBURG-H,PENNSTLVAITIA, HOUSE ELECTRIC AND MANUFACTURING COMPANY, A

DYNAMO-ELEOTBIC MACHINE.

SYLVANIA.

micron 10 mmcoaronsmon or rm- Specification of Letters Patent.

Patented Dec. 26, 1916.

Application filed April 1, 1915. Serial No. 10,479.

To all whom it may concern:

Be it known that I, CHARLES W. Susana, a subject of the Emperor ofGermany, and a resident of Pittsbur h in the county of Allegheny andState 0 Fennsylvania, have invented a new and useful Improvement inDynamo-Electric Machines, of which the following is a s ification.

My invention relates to d name-electric machines, and it has s eciareference to Sh"""fl"fll features of rames for electric railway motorsand the like.

The object of my invention is to provide a split-type motor ofpressed-metal construction, whereby all the well-known and inherentadvantages of such construction, including decrease of weight, sizeofdparts, and costs of manufacture, are obtaine In my co-pendingapplication, Serial No. 860,974, filed September 10, 1914, is shown anddescribed a pressed-steel railway motor frame of the box or solid-frametype.

According to my present invention, I provide a split-type pressed-metalframe having its inherent operating convenience and also embodyingcertain novel structural features and relations of parts.

The advantages of pressed-steel construction of dynamo-electric machineframes over securing a uniform distribution of current to. and heatingof, the motors of the same vehicle or train. From another view-point,the size of a motor for a predetermined output may be considerablydecreased if pressed-steel 81g 8.8 We as In the wheels.

In the accompanying drawings, Figure 1 is a view in end elevation, of amotor frame 6 SIZE an weig 0 .a substantially central p constructed inaccordance with my invent on; Figs. 2 and 3 are fragmentary plan viewsof the respective ends of the structure illustrated in lug. 1; Figs. 4and 5 are fragmentary views, in end elevation and in plan, respectively,of a portion of the structure illustrated in Fig. 3; Fig. 6 is a planviewof a modified form of axle bracket that is adapted to employed in myinvention; Fig. 7 1s a view, in side elevation, of the ax e bracketshown in Fig. 6; Figs. 8 and 10 are views, in end elevation, with rtionsbroken away, of modified forms 0 my invention; and Figs. 9 and 11 aresimilar views, in end elevation of other modifications of thestructureshown in Fig. 1.

Referring to Figs. 1 and 2 of the drawing, the structure here showncomprises upper and lower complementary incasing memers 1 and 2,respectivel that meet along ane 3, and a'pair of axle-inclosing memberscomprising an axle bracket 4 and a cooperating axle cap 5. The mainincasing members severally comprise a split-type outer sup orting orshell member 6, preferably of light pressedsteel construction, and amagnetizable yoke or band 7 that is disposed within the shell' members 6and is also split along the central plane 3. The purpose of themagnetizable band 7 is to constitute a portion of the main magneticcircuit of the motor, whereby the shell member 6 may be of relativelysmall cross-section that is suflicient for purposes of mechanicalstrength only, although the shell member will also preferably beincluded in the magnetic circuit. The main incasing membersl and 2 arepreferably pivotally be secured to the respective incasing membersthrough the agency of a plurality of rivets 9 or the like.

Thvincasing members 1 and 2 are provided with complementary central endopenings 10. in accordance with customary practice, and a pair ofannular bands 11 and 11', respectively having longitudinally-extendinglips 12 and 13,

Preferably, suitable rein orcing rings 1.1. aredisposed within thecasing member 1 around the openings 10, and the bands 11 and 11" may besecured to the incasing members and to the min forcing rings in anysuitable manner, as by bolts, rivets or spot welding. The semicircularlip members 12 and 13 respectively terminate near one side of the framein upwardly and downwardly extending end portions 11 and 15 that areadapted to form bolt-receiving pockets. Near the other side of theframe, the lip 13 terminates in an outwardly extending end member 16,while the lip 12 terminates in a relatively long upwardly extending endmember 17. The main incasing members 1 and 2 are detachablv securedtogether by means of a plurality of bolts 18 that are respectivelydisposed in the pockets formed between the semi-cylindrical lip members12 and 13 and the various end portions just recited.

A plurality of bolts 19 extend through seats 20 of the lips 12 for thepurpose of securing suitable bearing-housings to the main incasingmember 1. Inasmuch as the particular type of bearing housing employed isnot essential to my present invention, I have simply conventionallyindicated such a housing at 21 and no further illustration is deemed.necessary.

The axle-inclosing members 4 and 5 are respectively provided with innerbearing members 22 and 23, in accordance with familiar practice. Thesupporting portion of the axle bracket 4 for the bearing member 22comprises a substantially semi-cylindrical portion or barrel 24 thatembraces the member 22 and is provided, near its outer side, with astraight portion 25, while its inner side is continued byastraightportion 26 and an upwardly-extending end portion 27 that is disposed incontact with the upwardlyextending end 17 of the lip 12. In theparticular form illustrated, the upwardly projecting ends 17 and 27 aresecured together by means of a plurality of rivets 28, although otherforms of attachment may be employed, some of which are set forth later.Similarly, the supporting part of the axle cap 5 for the bearing member23 comprises a substantially semi-cylindrical portion or barrel 29 thatembraces the bearing member 23 and terminates, on its outer side, inastraight portion 30 that alines with the straight portion 25 of the axlebracket, while the inner end of the barrel 29 constitutes a straightportion 31 that is disposed in substantial alinement with the straightportion 26 of the axle bracket. The axle cap 5 is detachably secured tothe axle bracket 4 by means of one or more bolts 32 that extend throughthe straight portions 25 and 30 on one side of the respectiveaxleinclosing members, and by means of one or more bolts 33 that extendthrough the straight portions 26 and 31 of these members on the otherside.

The axle-inclosing members 4 and 5 are preferably respectively providedwith suitable boxes or chambers 34 and 35 for the reception of thelubricating material to be used in connection with the bearing members22 and 23, as is customary practice. The upper chamber 34 is providedwith a top opening having a suitable 'covermember 34", and alongitudinally-extending suitably-split partition member 34" ispreferably employed for the familiar purpose of providing an oil-gagingwell and a. contiguous receptacle for waste or other suitabledistributer of lubricating material. The upper portion of the axle cap 4embodies a suitable plate member 35 that may be secured to the upwardlyextending end member 17 by one or more of the rivets 28, and thebearing-member 22 may be secured to the plate members 35 and the barrel29 through the agency of one or more rivets 35", or the like for thepurpose of preventing an undesirable spread of lubricant. As a means forsupporting the motor frame, on the side remote from the axle-inclosingmembers, a suspension bar-36 of any suitable and familiar'tiorm may beemployed, and is shown as secured to the upper incasing member 1.

It will be observed that the axle bracket 4 is secured, by means of therivets 28, partially to the incasing member 1 and the reinforcing ring11" and partially to the upwardly-extending end 17 of the-lip 12.Although the axle cap 5 is here shown as detachably secured to the axlebracket 4, obviously, the cap may be secured to the incasing member 2 inthe same manner as the bracket is attached to the member 1.

Reference may now be had to Figs. 3, 4,

and 5 which illustrate the pinion end of the motor frame. A combinedaxle bracket and gear-case-supporting arm 37 is adapted to be secured tothe incasing member 1 in a manner similar to that in which the axlebracket 4 is attached, while a gear-case-supporting nose 38 is disposedon the opposite side of the end opening 10. The main incasing members,in this instance, are Drovided with annular bands, similar to the bands11 and 11, surrounding the corresponding end opening, the upper bandbeng provided with a longitudinally-extendmg 11p 39 which may be securedto an internally disposed reinforcing ring 39 in any suitable manner.The lip 39 is provided. near one side of the frame, with an upwardly-extending end member 40, and, near the other side of the frame,with another upwardly-extending member 41, these two end membersrespectively corresponding to the members 17 and 14 in the structureillustrated in Fig. 1.

The combined axle bracket and gear-casesupporting arm 37 may be securedto the upwardly-extending end 40 of the lip 39 and to the incasingmember 1 in a manner similar to that.in which the axle bracket 4 isattached, and the gear-case-supporting nose 38 may be positioned byspot-welding or by means ofsuitable rivets shown) that extend throughthe nose and the u wardly-extending end 41 of the lip 39. t should beobserved that the gearcase-supporting nose may take a different form,such, for example, as being formed integrally with theupwardly-extending end 41.

A second axle ca 5 .is-adapted .to be secured to the member 37 in amannersimilar to that illustrated in Fig. 1 and the bearing members 22and 23 are adapted to assume positions similar to those illustrated inthat figure. The semi-cylindrical supportin barrel 24 of the axlebracket is here replaced by a similar curved member 42 that is pro--vided with an extension 43 that gradually tapers into the mainbody-portion 44 of the gear-case-supporting arm. The body portion 44 isformed integrally with the axle portion of the member 37 and its freeend 45 is bent at substantially right angles to the body portion 44 toconform to the customarily employed type of supporting arm. The endportion 45 is. shown as being of channel section for purposes oflightness of weight and simplicity of manufacture.

Referring now to Figs. 6 and 7 the incasing member 1 is shown asprovided with an internally-disposed reinforcing ring 46 around thecorresponding end-opening and an angle member 46 that is disposed on theoutside of the frame and that corresponds to the annular band 11 ofFig. 1. An axle .bracket 47 is partially secured to the incasing member1 and the reinforcing ring 46 by means of one or more rivets 48 andanother portion of the axle bracket is secured to the angle member 46"through the agency of rivets 49.

For the purpose of strengthening the structure of the axle bracket 47,it is rovided with a pair of transversely exten ing ribs or web members48' and 49' that extend from the surface of the axle bracket adjacent tothe split between the axle bracket and the axle cap to the outer curvedsurface of the bracket, thereby formin a plurality of bolt-receivingpockets 50 t at are disposed adjacent to the incasing member 1.

The structure illustrated in Fig. 8 diflers from that shown in Fig. 1 byreason of the addition of a machined plate 51 which is secured to theupper portion of the lip end I II I. I I I 7 52, and of a similar plate53 that is secured to the lower portion of the bracket end member 27 bya plurality of rivets 54. The two 1plates 51 and 53 are of substantiallyequa dimensions and are adapted to engage each other along the plane 55intermediate reason of the interlocking or bolts (not V the ends of themembers 17 and 27, which may be detachably securedtofether throufih theagency of a plurality 0 bolts 56. y feature of the plates 51 and 53, thebolts 56 are thus re-' ieved of any transverse strains that may beimposed by reason of the motor frame resting upon "the customary axlethat extends through the independentsetsof axle-inclosing members 4 and5. The detachability of the. motor frame proper and of theaxle-inclosing members, as a unit, fromeach other permits of the novelprocedure of removing the one independently of theother, if desired, forpurposes of inspection and' re air. a

In Fig. 9, the incasing members 1 and -2 are respectively shown asrovided with annular'bands 57 and 58; that surround the central endopening and a plurality of angle members 59,- 60, 61 and 62 that aredisgeosed in alined pairs on theinc memrs near the opposit sides thereoThe angle members are respectively provided with longitudinallyextending h members 59', 60, 61 and 62 through the rst two of which asuitable bolt 63 extends and through the latter two a similar boltextends, thereby detachably securing the incasing members 1 and 2together. The axle-inclosing 95 members 4 and 5 are shown as secured tothe angle member 61 in a manner similar to the attachment thereof to theupwardly-extending end 17 of the lip 12 in the structure of Fi 1. Asuitable internally-disposed rein orcing .vided with aninwardly-extending straight portion 31! that is adapted to constitute acontinuation of the lip 13 of the annular band 11. One or more bolts 18are adapted to extend through the straight ortion 31 and thecorresponding portion 0 the Ii 12 that is located near the upwardlyexten ing end 17 The axle bracket 4 may be secured to the end member 17'in a manner similar to that illustrated in Fig. 1.

Referring to Fig. 11, the structure illustrated comprises a modifiedform 5" of axle cap, the outer end of which is adapted to be secured tothe axle bracket 4 by means of one or more of the bolts 32 and thesemi-cylindrical supporting portion 29" of which has its inner endterminating in the straight I I e nular band 11 is portion 66 that greatdistance above the central line of 3, and the straight ortion 31 of theaxle cap 5" is also locate above this line. One of the bolts 18 isadapted to extend through and 11, as well as some of the otherstruclitres, the bolt 32, which serves to attach the mile cap to theaxle bracket may be disposed Fear the diagonally opposite corner fromthe bolt 18, therebydispensing with a bolt 32 on the front side of theaxle-inclosing members, such as is shown in Fig. 2; I

' For the sake of simplicity and convenience In illustrating the motorframes, Figs. 8 to 11, inclusive, are illustrated without the hingemember 8, the cover member 34, the, partition member 34", and suspensionbar 36. It will be understood however, that these members are preferablyprovided in all cases. p Various modifications in the structural detailsherein set forth maybe effected with;

out departing from the spirit and scope of my invention and I'desire,therefore, that inclosing m'embers, means for securingsaid 7';

last members ftogetlier, means extending [through said lips; fordetachably holdin said main incasmgmembers togetherfan [means fornon-integrally securing at least onepf said axle-iiiclosing] members toone ofsaid lips. H I y j 6, A frame for dynamo electric-machines of thesplit typejcomprisi n an;upper and a lowerlmain mcasia mem r 'havin"c'om-.

l entapy end openings, s plit rein eyeing a an surroundingsaid,'open1ngs .andhaving m llrs ithqm l e p on said uppermemberfispectively having upwardly' extending i 'dsfloc'ated. near, one

T side of the frame 'axl'e inclosin members 9c jcom'p'rls ng an-axle-brapket, an a 'corre} spop ifig axle cap, means forfidetach'ably's'ecurm sald bracket and'cptogether, means a Q comprisinga pair of maina nily such limitations shall be imposed as are bitten j g: throughSaidlips fppidetachablx indicated in the appended claims, Iholdingjf'saldl te: I claim as my invention: *fgethergand mean 'iorlnonglnpeglfglly seg l, A pressed metal dynamo-electric macuriilaxlebra'cket tolone'p Saidnpchine frame'of the split type, comprising a"war y-extending ends. lura-lity of complementary main incasing' 7;A.frame for dynamo electricginachines members, a. plurality of cooperatingaxlelower presedsteel 'main mcas ng member the various pressed-metal,frame partsltov l l i geiher 1 motes aba ias t ee ease t nan- 2. Apressed-steel dynamo-electric ma ingsQand having,longitudingally ertending d'line frame of the split type, comprisingdan lipsom'saidnppermember respee- 1 0. upper and a lower main incasing, mem er,tivel hav1ng 'pwardly extefidingendsfllo- 'cated 'nearfpne, 9 bracketand a cooperating axle cap means inclos n' memberscompl 'isi ng anupper'axle ,q r securing the "aXle-inclosing members top I A i I gather,means for securing at least one of bo1tsfor detach'ably' securingsaidgcap to said bracket, a plurality of bolts extending casing memberand means forsecuring said 1 r I'm-using members together. each of saidopenings'for detachablyfhold- 3.. A frame for dynamo-electric machines,ing said maing'i'ncasi'ng 1nembers,together,

h i li res si ge fl pef Enclosing members and means for securing in 5,pleme t 'm e 51i91i59 nmspfi lips the axle-inclosing members comprisingag axle l side of the fffitame, axlebra-era and; a lower axle lcap, aplurality of said members to the corresponding main inthrough'said lipson the respective sides of of the split type comprising a peripherally"and 'a plurality of rivets forsecilring said mmeraia mne-nasne machines"nosed split magnetizable band, a pair of complementary pressed-steelmembers therefor. axle-inclosing members comprising an" Mic bracket anda cooperating axle cap, means for removably securing the axlegnclosingmembers together, means for non-- integrally securing at least one ofsaid last members to the correspondin incasing member, and means fordetachab y securing s-ml incasipg members together.

a the split type embodying a plurality of main incasing members havingcomplemenlar v end openings, split reinforcing bands having extendinglips surrounding said axlebracket to one of said upwardly-extend- .fm eW. Y i 8; A frame, for dynamo-' electric machines of thesplit typeeomprisingfan upper and a lower pressed-steel main ,mcasing. memberhaving complementary. end openings, split reinforcingbands surroundmsaid 0 enings' and having longitudinaily-exten ing lipsi the lips onsaid upper member respec we cated near one sideof the frame,axle-inclosing members comprising .an upper axle bracket and a loweraxle cap, a, plurality of bolts for, detachably securing I said cap to yhaving upwardly-extending ends 10- said bracket, a plurality pf boltsextending through said lips on the respective sides of tary endopenings, split reinforcing bands each of said openings for detachablyholdhaving longitudinally-extending lips suring said main mcaslngmembers together, a rounding said openings, thefirst of-the hps pluralitof bolts for detachably securing on said upper member having anupwardlysaid a e bracket to the first of said upextending end locatednear one si e of the 7 wardly-extending ends and interlocking frame,anaxle bracket having one portion means interposed between the bracketan secured to said upwardly-extending end, an said first end forrelieving said last bolts of axle cap having one side forming acontinutransverse thrust. 1c 9. The combination with an incasing mcasinmember, and attachin means for 75 frame for dynamo-electric machines, ofaxlesaid ax e cap comprlsin a be t extendin inclosing means detachablysecured thereto, through said axle cap s1 e and said first lip wherebyeither said frame or said means and another bolt located diagonallyopposite may be removed independently the one of from the first bolt andadapted to secure the the other. axle bracket and the axle ca to ether a10. The combination with a split incasing 16. A frame for dynamo-eectric machines frame for dynamo-electric machines, of axleof the splittype embodzing a plurality of inclosingmeans comprising an axle bracketmain incasing members avln complemenand an axle cap, and means fordetachably end openings, split rein orcing bands securing saidaxle-inclosing means to said having. longitudinally-extending hps sur- 5frame, whereby either said frame or said rounding said openings, thefirst of the lips axle-inclosing means may be removed indeon said uppermember-having an u wardlypendently the one of the other. extending endlocated near one sidb of the 11. The combination with anincasingv frame,an axle brackethaving one portion frame for dynamo-electric machines, ofin secured to said upwardly-extending end, an dependent axle-inclosingmeans respectively axle cap having two diagonally opposite cordetachablys'ecured near the ends of the ners respectively detachably secured tosaid frame, whereby either said frame or either hp and to said axlebracket, and a pluof said means may be removed indepen rahtyof boltslocated at the respective sides .30 ently the one of the other. a ofsaid-openings and extendingthrough the 12, Th c mbination with a s litincasing corresponding lips for detachably securing frame fordynamo-electric machines, of insaid mam mcas ng members. together.dependent sets comprising axle brackets and 17. The combination with adynamo-elecax e caps, said sets being respectively detr o machine framehaving end openings, of 8: tachably secured near the ends of the frame,reinforcing bands surrounding said openwhereby any of said brackets andcaps may mgs and having extendm lips, and an axlebe removedindependently of the frame and bracket s c re o S id me and to said ofeach other. lips.

13. A frame for dynamo-electri 1 18. A frame for dynamo-electricmachines 40 chines of the split type embodying a pluralof the 'spht typecomprising an upper and a i of main incasing members havin lower mainincasingmember having complep ementary end openings, split rein orcingmenta end openmgs, split reinforcing. bands surrounding said openings, aplurality bands aving longitu wally-extending lips of plates havingextending lips and disposed surrounding said openings, one of the lips45 on the respective incasing members on oppohaving anipwardly-extending end located site sides of said openings and means fordenear one si e of the frame, axle-inclosing tachably securing thecorresponding lips tomembers comprisin an axle bracket and gether inpairs. an axle cap, means or detachably securing 14. A frame fordynamo-electric machines said capl to said bracket and means for non- 50of the split type embed ing a plurality of inte a y securing saidbracketto said up-' maln mcasmg members avin complemenwar -extending end and tosaid upper intary end openings, split rein orcing bands casing member.having longitudinally-extending lips sur- 19. Thecombination with adynamo-elecroundmg said openings, the first of the lips tric machineframe having end openings, of 55 on said upper member having an nwardlyreinforcing bands surrounding said 0 enextending end located nearone si e of the ings and having longitudinally-extending frame, an axlebracket having one portion lips, and a combined axle bracket andgearsecured tosald upwardly-extending end, and casep orting armassociated partlally an axle cap havinglitssideswdetachably sewith sea.eframeandpartially with said lips. cuflrfm mesp w fig sid f' e 0 We] ae ZOTISTfraEe for dynamo-electric machines bracket and to said first lipnear said upof the split type comprising a pair of main wardly-extendingend, respectively. lncasing members having com lementary 15. A me fordynamo-electric machines end openin split reinforcing ands havof thesplit type embodying a plurality of ing lon 'tu inally-extending lipssurround- 6' mam mcasmg members having complemening sai openings, one ofthe lips having an upwardly-extending end located near one side of theframe, a combined axle ,bracket and ear-case-supporting arm, acooperating ax e cap, means for detachably i securing said cap to saidbracket and arm and means for non-inte rally securing said bracket andarm to sai upwardly-extending end and to the corresponding incasingmember.

21. A ,irame' for dynamo-electric machines of the split type comprisingan up r and a lower pressed-steel incasing memer having complementaryend openings, split reinforcing rings surrounding said openings withinthe frame, split reinforcin bands surrounding said openings externa lyand having longitudinally-extending lips, one of the upper member lipshavlng an upwardly-extending end located near one side of the frame, acombined axlebracket and gear-case-supporting arm, a cooperating axlecap, means for detachably securing said cap to said bracket and arm andmeans for non-integrally securing the bracket and arm to saidupwardly-extending end and to said upper incasing member and thecorresponding reinforcin ring. i 22. The com ination with adynamo-electric machine frame having end openings, of reinforcing bandssurrounding said openings and a gear-casesupporting nose associated withone of said bands.

23. The combination with a dynamo-electric machine frame of the splittype embodying a pair of main incasing members having complementary endopenings, of split reinforcing bands having longitudinally-extendinglips, and a gear-case-supportin nose mechanically secured to one of sailips.

24. A'frame for dynamo-electric machines of the split type comprisingeanupper and a lower main incasing mem r havin com- Elementary end openngs, split rein orcing ands surrounding said openings and havinglongitudinally-extending lips, each lip on said upper member having an nwardlyextending end near one side of the rame, an axle bracketnon-integrally secured to one of said upwardly extending ends and tosaid up er member, a combined axle bracket an gear-case-supporting armsimilarly secured to the other of said ends and to the upper member apair of axle ca s respectively detachably secured to sai bracket and tosaid bracket and arm and a gearcase-su porting nose secured to one oisaid lips su antially opposite to said bracket and arm. r

25. A pressed-steel dynamo-electric machine of the split type comprisinga plurality of complementary main incasing members and axle-inclosingmeans-split in alinement with the main members.

26. A pressed-steel dynamo-electric machine of the split type comprisinga plurality of complementary main incasing members and a plurality ofcooperating axle-inclosing members split in alinement with the mammembers, and means for securin the various pressed-steel frame partstoget er.

In testimony whereof, -I have hereunto subscribed my name this 30th dayof March,

dHaRLEs w. STARKER.

